个人信息Personal Information
讲师
硕士生导师
主要任职:Lecturer
其他任职:水工研究所副所长;水利水电教工党支部副书记
性别:女
毕业院校:同济大学
学位:博士
所在单位:水利工程系
学科:水工结构工程
办公地点:辽宁省大连市高新园区凌工路2号大连理工大学综合实验3号楼215室
联系方式:ytang@dlut.edu.cn
电子邮箱:ytang@dlut.edu.cn
Stability and Accuracy Analysis of Real-Time Hybrid Simulation (RTHS) with Incomplete Boundary Conditions and Actuator Delay
点击次数:
论文类型:期刊论文
发表时间:2021-01-10
发表刊物:INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
卷号:20
期号:11
ISSN号:0219-4554
关键字:Real-time hybrid simulation; incomplete boundary conditions; actuator delay; substructures; stability; seismic responses
摘要:The main purpose of this paper is to examine the effects of incomplete boundary conditions and actuator delay on the dynamic responses of seismically excited civil structures. A set of constraint equations representing the reserved interface degrees-of-freedom (DOFs) and the delay are introduced to form a mechanical model of real-time hybrid simulation (RTHS) (referred to as RTHS-I&A) for a multi-degree-of-freedom (MDOF) system based on dynamic substructure method (DSM). Then, the RTHS-I&A system is modeled by a discrete closed-loop transfer function based on discrete control theory, using a selected integration algorithm, and the stability of the system is investigated by examining the poles of the function. Three typical cases with different structural properties are utilized to investigate the effects of incomplete boundary conditions and actuator delay. The results show that both incomplete boundary conditions and actuator delay greatly affect the dynamic responses of structures, and the combination of the two factors will amplify their influence especially on the nodes at the interface. The numerical model of RTHS-I&A proposed in this paper is quite useful for evaluating the responses of structures with different interface conditions and loading schemes that are preliminarily designed before a physical testing is conducted, and provides guidance for future relevant researches.